4. The Polka-Dot Sweater — We're a polka-dot-loving people here, and no matter what season it is, they always seem to make it on our list. But this fall, instead of the smaller, subtler dots, go with bigger, bolder spots that use bright color and scale to make this forever classic modern once again.  

J. Crew Collection Cashmere Polka-Dot Sweater, $268, available at J.Crew; MinkPink Domino Effect Sweater, $44.99, available at Piperlime.